1.the substance or substances of which any physical object consists or is composed.

2."property" or "properties" are the things that distinguish the difference between matters.

3.a substance made of more than 1 subsatnce mixed together.

4. composed of different substances or the same substance in different phases, as solid ice and liquid water.

5. Of the same or similar nature or kind.

6.Density : 19,300 kg per cubic metre. Melting point : 1337.33 K (1064.18 °C). Boiling point : 3129 K (2856 °C).

7.electrical conductivity: highest known, thermal conductivity: highest known, melting point: 961.93ºC

8. green, jiggly, translusent.

9.Electron Configuration: 1s22s22p4, Atomic Radius: 74 pm, Ionic Radius: 140(O2-).